About eight years ago, I spent roughly a year at a payroll and HR technology company as a Technical and Applications Management Specialist. I mainly learned the job hands-on rather than building a formal career around it, and I'm now trying to understand whether that experience could still be valuable in the job market.
My work included developing, configuring, testing, and supporting automated HRIS interfaces with SQR and CA AutoSys; scheduling inbound and outbound data exchanges; managing secure file transfers with IBM Sterling File Gateway, managed file transfer tools, SFTP, and SSH; troubleshooting production failures and downstream processing issues; participating in 24/7 on-call rotations; maintaining LDAP accounts and client SSH/PGP keys; and coordinating firewall changes and production deployments.
Several resume-focused tools keep suggesting that this background could lead to well-paid work in EDI or systems integration. Is that realistic after only about a year of experience, especially since it was eight years ago? What exactly does X12 involve, and would my old experience be relevant enough to build on?
2 Answers
X12 is the broader electronic data interchange standard. Transaction sets such as 850 for purchase orders and 856 for advance shipping notices are specific document types within that standard. The mapping work is where much of the complexity lives: translating one company’s data structure into another’s while following a very precise specification. Your old experience may not make you an expert today, but it gives you useful exposure to the exact areas employers care about—interfaces, file movement, scheduling, troubleshooting, security, and production operations. You would probably need to refresh the terminology and learn current integration platforms, but the background is worth presenting honestly rather than dismissing it.
There is definitely solid money in EDI and systems integration. The work is detail-heavy, and you have to be comfortable digging through long, rigid specifications and figuring out why one field or delimiter broke an entire exchange. A lot of the ecosystem is built on technology that feels decades old, but companies still rely on it for payroll, healthcare, logistics, finance, and other critical workflows. Your experience with scheduling, secure transfers, production support, keys, firewalls, and incident response is relevant beyond just one employer.
That actually sounds familiar. I liked working with the older systems and spent a lot of time adding SQR processes around mainframe-style workflows. It’s surprising that so much of this infrastructure is still around, even with modern automation and AI everywhere.